摘要
温度示踪法是渗流监测的重要手段。该文基于能消除渗流方向影响的点热源渗流监测系统,选取传感-加热单元的集成方式、监测管几何尺寸、加热电压、加热时长4个因素进行了对比试验,研究各类因素对点热源渗流监测系统监测效果的影响。结果表明:该文所采用的两种传感-加热单元集成方式均能获得较好的监测结果;监测管几何尺寸对监测结果影响较大,监测管与传感-加热单元的间隙越大,监测效果越差;加热电压和加热时长对监测结果几乎没有影响。试验结果有助于提高渗流监测精度,从而有效预防工程事故的发生。
The temperature tracer method plays a significant role in monitoring seepage. Comparative tests were implemented via a seepage monitoring system of the point heat source which can remove the effects of seepage direction, to study the monitoring effects influenced by the four factors on i.e. the integration approach of the sensing-heating unit, the geometrical dimension of the monitoring tube, the heating voltage and the heating time. Results show that both integration approaches of the sensing-heating unit chosen responded well in this study and the monitoring effects were weakened by increasing the distance between the monitoring tube and the sensing-heating unit. The test data also reveals that the monitoring results were closely relevant with the geometrical dimension of the monitoring tube while they were almost uncorrelated with the heating voltage and the heating time. Findings in this paper can promote the accuracy of seepage monitoring in order to prevent engineering accidents.
作者
艾婷
刘洋
张朝鹏
兰中仁
陈江
AI Ting;LIU Yang;ZHANG Zhaopeng;LAN Zhongren;CHEN Jiang(School of Architecture and Environment,Sichuan University,Chengdu 610225,China)
出处
《实验科学与技术》
2022年第1期16-21,共6页
Experiment Science and Technology
基金
国家自然科学基金青年基金(51509174)。
关键词
点热源
渗流监测
光纤光栅
温度示踪法
point heat source
seepage monitoring
fiber grating
temperature tracer method
